package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.vo.UserLoginVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServiceImpl  implements UserService {
    //微信服务接口地址
    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private WeChatProperties weChatProperties; //配置文件中传入的值会被放入配置类，所以只需要自动注入然后获取即可
   @Autowired
   private UserMapper userMapper;
    @Override
    public User login(UserLoginDTO userLoginDTO) {

//调用微信接口服务

        String openid = getOpenid(userLoginDTO.getCode());

        if (openid == null) {

            throw  new RuntimeException(MessageConstant.LOGIN_FAILED);
        }
        //判断是否已经注册
        User user = userMapper.login(openid);

        if(user == null)
        {
           user= User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();

            userMapper.insert(user);
        }

        return user;

    }
    private String getOpenid(String code) {
        HashMap<String, String> map = new HashMap<>();
        map.put("appid", weChatProperties.getAppid());
        map.put("secret", weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type", "authorization_code");

        String json = HttpClientUtil.doGet(WX_LOGIN, map);

        JSONObject jsonObject = JSONObject.parseObject(json);
        String openid = jsonObject.getString("openid");
        //判断openid是否为空
        return openid;
}

}
